Plastic food tub



FIG. 1 is a perspective view of a plastic food tub embodying my new design;

FIG. 2 is a perspective view of the bottom thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

CLAIM The ornamental design for a plastic food tub, as shown and described. 